action.yml

name: Auto Merge wrapper
description: Set of actions for sclorg auto-merge automation

branding:
  icon: git-merge
  color: blue

inputs:
  # At least one of pr-number or pr-metadata has to be provided
  pr-number:
    required: false
    description: Pull Request number
  pr-metadata:
    required: false
    description: Pull Request metadata

  token:
    required: true
    description: GitHub TOKEN

runs:
  using: composite
  
  steps:
    # When running on schedule, we need to fetch the PR metadata
    # But when running on workflow_run, we already have the PR metadata in form of artifact.
    # This step is skipped when pr-metadata is provided as input.
    - if: ${{ !inputs.pr-metadata }}
      id: metadata
      name: Gather Pull Request Metadata
      uses: redhat-plumbers-in-action/gather-pull-request-metadata@v1
      with:
        pr-number: ${{ inputs.pr-number }}

    # Validate the pull request (CI, review, etc.)
    - id: pull-request-validator
      name: Pull Request Validator
      uses: redhat-plumbers-in-action/pull-request-validator@v2
      with:
        pr-metadata: ${{ inputs.pr-metadata && inputs.pr-metadata || steps.metadata.outputs.metadata }}
        required-approvals: '2'
        token: ${{ inputs.token }}

    # Merge the PR if all checks passed
    - id: auto-merge
      name: Auto Merge
      uses: redhat-plumbers-in-action/auto-merge@v2
      with:
        pr-metadata: ${{ inputs.pr-metadata && inputs.pr-metadata || steps.metadata.outputs.metadata }}
        token: ${{ inputs.token }}

    # Always show the results in PR sticky comment
    - if: ${{ !cancelled() }}
      name: Show results in PR comment
      uses: redhat-plumbers-in-action/issue-commentator@v1
      with:
        issue: ${{ inputs.pr-metadata && fromJSON(inputs.pr-metadata).number || fromJSON(steps.metadata.outputs.metadata).number }}
        message: |
          ${{ steps.pull-request-validator.outputs.status && steps.pull-request-validator.outputs.status || '' }}
          ${{ steps.auto-merge.outputs.status && steps.auto-merge.outputs.status || '' }}
        token: ${{ inputs.token }}